Project Euler

[GrandizerII]

Sure!

To be clear, I didn't actually loop through every number. I skipped evens, and I didn't check for factors after 1/3 of the number I was checking.

Ok, so it looks like you don't really need one then. I just reread your previous post and realized you already did solve that.

I think though it's a similar thing with the triangle numbers, but it's been a while now so can't remember exactly what I did.

[GrandizerII]

Sure!

To be clear, I didn't actually loop through every number. I skipped evens, and I didn't check for factors after 1/3 of the number I was checking.

Ok, so it looks like you don't really need one then. I just reread your previous post and realized you already did solve that.

I think though it's a similar thing with the triangle numbers, but it's been a while now so can't remember exactly what I did.

I just remembered what I did. Are you doing the same for what you did with the prime summation problem, and then ... depending on whether the number you're checking is a perfect ... or not?

[A Handmaid]

I really like these problems, I've been looking for a website like this for ages!

Also, I've never used Python before, but looking at its syntax, I may learn in just for these problems. It just looks so neat!

[GrandizerII]

I really like these problems, I've been looking for a website like this for ages!

Also, I've never used Python before, but looking at its syntax, I may learn in just for these problems. It just looks so neat!

Yeah, the only thing thus far I've noticed is a problem with Python that other programming languages I've tried do not have is that you can't declare a variable without initializing it. Or at least I don't know of a way to do so.

[SteelCurtain]

Wait, you can declare variables in Python without initializing them.

Code:

def main(): a = 5 print(a) main()

In other languages you'll at least have to declare the variable type, whereas Python will determine the variable type automatically. At least the packaged compiler/shell (IDLE) will.

[GrandizerII]

Wait, you can declare variables in Python without initializing them.

Code:

def main():    a = 5    print(a) main()

In other languages you'll at least have to declare the variable type, whereas Python will determine the variable type automatically. At least the packaged compiler/shell (IDLE) will.

Sorry, but can you elaborate on what you did here to show that this is possible? All I see is that you created a procedure that prints the value of 5 and then called it.

[A Handmaid]

Well, why would you need uninitialized values?

I can't find a good reason for a language to have one.

[SteelCurtain]

It was just an example of defining a variable 'a' without initializing it first with Python.

For example, in C++, this same code would look like:

Code:

#include <iostream> using namespace std; int main() { int a; a = 5; //you could technically combine these two lines into 'int a = 5;' cout << a << endl; return 0; }

[GrandizerII]

Well, why would you need uninitialized values?

I can't find a good reason for a language to have one.

I'll include an example code if I remember what it was I was struggling with that made me wish python would let me define variables without assigning values.

[SteelCurtain]

Ahh, I see what you mean.

You want to just initialize variables.

I think Python only allows you to do that with lists and tuples.